Ubuntu SRU information [Impact] Use of Neutron internal DNS resolution for resolution of instances attached to the same project network is inconsistent due to use of configuration options for the actual hostname entries in the dnsmasq hosts file paired with the network 'dns_domain' attribute which is used to set the search path for the same dnsmasq instance.
[Test Case] Deploy OpenStack with Neutron internal DNS support enabled Configure neutron with a dns_domain of 'testcase.internal' Set a dns_domain attribute on the project network ('designate.local') Boot an instance attached to the network DNS resolution within the host will be asymmetric in terms of the actual dns domain used. root@bionic-045546-2:~# host 192.168.21.222 222.21.168.192.in-addr.arpa domain name pointer bionic-045546-2.testcase.internal. root@bionic-045546-2:~# host bionic-045546-2 bionic-045546-2.designate.local has address 192.168.21.222 which should be root@bionic-045546-2:~# host bionic-045546-2 bionic-045546-2.testcase.local has address 192.168.21.222 [Regression Potential] Minimal; the proposed fix actually reverts changes in Neutron which altered the behaviour of the internal DNS support in Neutron incorrectly. [Other Info] This change in behaviour has been discussed at the upstream Neutron irc meeting with consensus that the behaviour changes are incorrect and should be reverted. ** Also affects: cloud-archive Importance: Undecided Status: New ** Also affects: cloud-archive/queens Importance: Undecided Status: New ** Also affects: cloud-archive/train Importance: Undecided Status: New ** Also affects: cloud-archive/rocky Importance: Undecided Status: New ** Also affects: cloud-archive/stein Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1826419 Title: dhcp agent configured with mismatching domain and host entries To manage notifications about this bug go to: https://bugs.launchpad.net/cloud-archive/+bug/1826419/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs